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How do I discover the custom post type slug when I'm on an archive page?

For instance if /products/ fires the archive-products.php template, how (pragmatically) do I get the post type slug?


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To get the current post type use get_post_type(). Then ask get_post_type_object() for all the data you need, for example the slug:

$post_type = get_post_type();
if ( $post_type )
    $post_type_data = get_post_type_object( $post_type );
    $post_type_slug = $post_type_data->rewrite['slug'];
    echo $post_type_slug;
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I think (hadn't tested) get_queried_object() would get to same info in less moves. – Rarst Oct 9 '12 at 1:15
@Rarst Maybe, but I think the code I suggested is easier to understand. – toscho Oct 9 '12 at 1:18
Toscho's solutions is wrong, because get_post_type returns the post type of current page, and, when you are into archive page, this function alwasy return "page". I'm sarching to solve the same: When I am into archive page of 'books' (4 example), I want this: 'books'. When I get it I'll post it. – eMarine Jun 25 '13 at 9:58
unfortunately it's not that simple, though you'd be better off with just $posttype = get_query_var('post_type'); ... I've added a comprehensive alternative. – majick Jun 6 at 18:56

I'm using this outside of the loop on the archive.php template to get which custom post archive I'm on.

It's a combo of the methods that both @toscho and @Rarst recommended:

$post_type = get_queried_object();
echo $post_type->rewrite['slug'];

Update: @majick pointed out that this only works if you've set the rewrite slug for your CPT. Rewrite slug is optional when registering a CPT and defaults to post_type if not set.

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when I tried this I got Notice: Undefined property: stdClass::$rewrite in ***\wp-content\themes\marks-remarks\archive.php on line 4 – patrickzdb Oct 20 '15 at 13:37
this will only work if the rewrite slug is set for the registered CPT, as it is optional and defaults to the post_type – majick Jun 3 at 3:23
Thanks for catching that @majick! I've updated the post to reflect your info. – Jerry Jun 3 at 14:23
turns out that was the tip of the iceberg... check my new answer for the underwater part :-) – majick Jun 6 at 18:53

You can use this code:

$queried_object = get_queried_object();
$posttype_slug = $queried_object->query_var;
echo $posttype_slug;

use $posttype_slug var whatever you need

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it needs to $queried_object->query_var['post_type']; for this to work... – majick Jun 6 at 18:57
No. $queried_object->query_var containe only string of post type. it's not object or array. look at this image: prntscr.com/bd58e1 – Guy Ytzhak Jun 6 at 19:33
ok but only if the queried object is definitely a custom post type object, you will get a different corresponding object and thus empty value for category/tax/tag/author archive pages for example. even for ?post_type=post I get empty. compare with get_query_var('post_type'); – majick Jun 6 at 20:31

t should be noted that if has_archive is set to true while registering the Custom Post Type, the post type archive /cptslug/ will be internally rewritten to ?post_type=cptslug. So this would also mean is_post_type_archive() will return true.

Unfortunately, where the registered rewrite slug is different to the post type, you are not actually reliably getting the post_type. eg. if your post type was myplugin_cars and your rewrite slug was cars and you need to be getting myplugin_cars then even this (to prevent errors if the current queried object is not a custom post type) will still fail:

$queryobject = get_queried_object();
if (has_property('rewrite',$queryobject)) {
    if (isset($queryobject->rewrite['slug'])) {
         $posttype = $queryobject->rewrite['slug'];

But because is_post_type_archive is true this is more reliable:

if (is_post_type_archive()) {
    $posttype = get_query_var('post_type');
    // which is basically the same as:
    // global $wp_query;
    // $posttype = $wp_query->query_vars['post_type'];
else ($posttype = 'post';}

But hang on, there's more... turns out with a little testing it really isn't that simple either... what if you are on a taxonomy archive page with multiple post types in the taxonomy..? Or assign post tags to a custom post type other than post? Or are on an author archive page? Date archive page? ...or even have a complex tax_query or meta_query for WP_Query?

The only reliable answer (without testing for every possible archive case) is to loop the actual posts in the query... Here is the full function I came up with to work on both singular and archive pages, and allowing you to optionally pass a custom query object (or post object/post ID for singular posts):

function get_current_post_types($object=null) {

    // no post type for a 404
    if (is_404()) {return '';}

    // standard single post type checks
    if (is_single()) {return 'post';}
    if (is_page()) {return 'page';}
    if (is_attachment()) {return 'attachment';}
    if (is_singular()) {
        // if a numeric value passed, assume it is a post ID
        if ( ($object) && (is_numeric($object)) ) {$object = get_post($object);}
        // if an object is passed on singular post/page, assume a post object
        if ( ($object) && (is_object($object)) ) {return get_post_type($object);}
        return get_post_type();

    // if a custom query object was not passed, use $wp_query global
    if ( (!$object) || (!is_object($object)) ) {
        global $wp_query; $object = $wp_query;
    if (!is_object($object)) {return '';} // should not fail

    // if the post_type query var has been explicitly set
    // (or implicitly set on the cpt via a has_archive redirect)
    // ie. this is true for is_post_type_archive at least
    // $vqueriedposttype = get_query_var('post_type'); // $wp_query only
    if (property_exists($object,'query_vars')) {
        $posttype = $object->query_vars['post_type'];
        if ($posttype) {return $posttype;}

    // handle all other cases by looping posts in query object
    $posttypes = array();
    if (method_exists($object,'found_posts')) {
        if ($object->found_posts > 0) {
            $queriedposts = $object->posts;
            foreach ($queriedposts as $queriedpost) {
                $posttype = $queriedpost->post_type;
                if (!in_array($posttype,$posttypes)) {$posttypes[] = $posttype;}
            if (count($posttypes == 1)) {return $posttypes[0];}
            else {return $posttypes;}
     return ''; // nothin to see here

This will reliably (did I say that?) return an array of post types if more than one is present, or a string with the single post type if there is only one type. All you need to do is:

$posttypes = get_current_post_types();
// or pass a post ID 
$posttypes = get_current_post_types($postid);
// or pass a post object
$posttypes = get_current_post_types($post);
// or pass a custom query - that has been run
$posttypes = get_current_post_types($query);

Example Usage (just for fun):

function myplugin_fading_thumbnails($posts,$query) {
    if (!is_archive()) {return $posts;}
    $cptslug = 'myplugin_slug'; $dosomethingcool = false;
    $posttypes = get_current_post_types($query);
    if ( (is_array($posttypes)) && (in_array($cptslug,$posttypes)) ) {$dosomethingcool = true;}
    elseif ($cptslug == $posttypes) {$dosomethingcool = true;}

    if ($dosomethingcool) {
        global $fadingthumbnails; $fadingthumbnails = $cptslug;
        if (!has_action('wp_footer','myplugin_cpt_script')) {

    function myplugin_cpt_script() {
        global $fadingthumbnails;
        echo "<script>var thumbnailclass = 'img.thumbtype-".$fadingthumbnails."';
        function fadeoutthumbnails() {jQuery(thumbnailclass).fadeOut(3000,fadeinthumbnails);}
        function fadeinthumbnails() {jQuery(thumbnailclass).fadeIn(3000,fadeoutthumbnails);}
        jQuery(document).ready(function() {fadeoutthumbnails();});

    return $posts;

To see the effect, change the custom post type in the code to post, and add a thumbtype-post class attribute to your post thumbnail images...

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if( get_post_type( get_the_ID() ) == 'projects' )
  //enter code for this post type
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